往复载荷作用下超大型载荷板现场试验研究

往复荷载作用下土体既产生弹性变形,同时又产生永久变形,这种累计的永久变形无疑是研究的重点,而关于往复荷载作用下土体变形特性的研究较少,鉴于此,笔者开展了往复载荷作用下超大型基础板沉降现场试验研究,通过对不同位置、不同深度土体中孔隙水压力、分层沉降和侧向位移的连续监测,研究土体中孔隙水压力、分层沉降和侧向位移对往复荷载的响应特征,得出了土体中孔隙水压力的增长和消散,以及分层沉降和侧向位移随载荷变化的规律,为工程设计的应用提供了依据。

Field Tests on Settlement of Oversized Foundation Plates under Repeated Loading

Both the elastic deformations and permanent plastic deformations were induced in subsoil under repeated loading, while the cumulative permanent plastic deformations were the most important to engineering. but so far study on deformation behaviours of subsoil under repeated loading is not often seen, Therefore, field tests on settlement of oversized foundation plates under repeated loading were studied. The pore water pressure and layered settlement and lateral displacement was continuously monitored in the soil at different locations and different depths. The corresponding influence of the repeated loading on the pore water pressure, layered settlement and lateral displacement was studied. Then the increasing and dissipation of the pore water pressure and the variation law of layered settlement and lateral displacement to repeated loading was also observed. These results provide proof for engineering design.